The 2018 season

Cyclone Ava (2018)

Cyclone Ava reached Category 2 in the South Indian between December 30, 2017 and January 9, 2018, with a lowest pressure of 958 mb, and made landfall.

Track and intensity

The whole track of Cyclone Ava, colored by strength, with the other storms of the 2018 season in the same basin behind it, and its wind and pressure hour by hour. Every fix is in the track table below.

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The storm

Basin
South Indian
Dates
December 30, 2017 to January 9, 2018
Peak strength
Category 2, 95 kt (109 mph)
Lowest pressure
958 mb (28.29 inHg)
Landfall
Yes
Accumulated cyclone energy
7.1
Tropical-storm-force wind reached
180 nmi (333 km, 207 mi) from the center at its widest
Hurricane-force wind reached
37 nmi (69 km, 43 mi) from the center at its widest
Eyewall radius at its peak
12 nmi (22 km, 14 mi)
Overall size
250 nmi (463 km, 288 mi) to the outermost closed isobar
Peak gust in the best track
115 kt (132 mph)
Fastest the center moved
22 kt (25 mph)
Identifier
SH032018

Deaths and damage

No source this site reads carries a casualty or damage figure for this storm.

Track

Time (UTC)PositionWindPressureStatus
Dec 30, 06:0011.5S 64.9E25 kt1004 mbTropical depression
Dec 30, 12:0011.7S 64.6E25 kt1004 mbTropical depression
Dec 30, 18:0012.1S 64.2E25 kt1004 mbTropical depression
Dec 31, 00:0012.7S 63.7E25 kt1005 mbTropical depression
Dec 31, 06:0013.5S 62.9E30 kt1000 mbTropical depression
Dec 31, 12:0013.8S 62.5E30 kt1000 mbTropical depression
Dec 31, 18:0014.0S 62.1E30 kt1000 mbTropical depression
Jan 1, 00:0014.3S 61.1E30 kt1000 mbTropical depression
Jan 1, 06:0014.6S 60.1E30 kt1000 mbTropical depression
Jan 1, 12:0014.8S 59.6E30 kt1000 mbTropical depression
Jan 1, 18:0015.3S 58.4E30 kt1000 mbTropical depression
Jan 2, 00:0015.6S 56.6E30 kt1000 mbTropical depression
Jan 2, 06:0015.6S 54.8E30 kt1000 mbTropical depression
Jan 2, 12:0015.5S 53.7E30 kt1002 mbTropical depression
Jan 2, 18:0015.4S 53.2E35 kt1001 mbTropical storm
Jan 3, 00:0015.2S 52.7E40 kt997 mbTropical storm
Jan 3, 06:0015.4S 52.9E45 kt989 mbTropical storm
Jan 3, 12:0016.0S 53.0E45 kt989 mbTropical storm
Jan 3, 18:0016.8S 52.9E45 kt989 mbTropical storm
Jan 4, 00:0017.3S 52.4E45 kt997 mbTropical storm
Jan 4, 06:0017.4S 52.0E50 kt994 mbTropical storm
Jan 4, 12:0017.3S 51.4E55 kt988 mbTropical storm
Jan 4, 18:0017.1S 50.9E65 kt981 mbTyphoon
Jan 5, 00:0017.3S 50.6E75 kt974 mbTyphoon
Jan 5, 06:0017.8S 50.0E95 kt958 mbTyphoon
Jan 5, 12:0018.1S 49.3E80 kt967 mbTyphoon
Jan 5, 18:0018.5S 48.7E65 kt977 mbTyphoon
Jan 6, 00:0019.1S 48.2E60 kt980 mbTropical storm
Jan 6, 06:0019.8S 47.8E55 kt984 mbTropical storm
Jan 6, 12:0020.5S 47.7E50 kt985 mbTropical storm
Jan 6, 18:0021.2S 48.0E40 kt992 mbTropical storm
Jan 7, 00:0022.0S 48.3E35 kt992 mbTropical storm
Jan 7, 06:0022.7S 48.4E35 kt991 mbTropical storm
Jan 7, 12:0023.6S 48.7E35 kt988 mbTropical storm
Jan 7, 18:0024.3S 48.9E40 kt985 mbTropical storm
Jan 8, 00:0024.8S 49.2E40 kt984 mbTropical storm
Jan 8, 06:0025.3S 49.2E40 kt983 mbTropical storm
Jan 8, 12:0026.9S 48.1E40 kt981 mbTropical storm
Jan 8, 18:0027.1S 46.7E40 kt981 mbTropical storm
Jan 9, 00:0027.1S 47.4E35 kt987 mbTropical storm
Jan 9, 06:0028.8S 48.0E35 kt989 mbTropical storm
Jan 9, 12:0030.6S 48.4E35 kt996 mbExtratropical
Jan 9, 18:0031.2S 49.5E38 kt991 mbExtratropical

Other South Indian storms of 2018

What this means

A best track is the record a warning agency settles on after the storm, not what it said at the time: position, maximum sustained wind and central pressure every six hours, revised against every observation that came in later. Category is the Saffir-Simpson scale, which runs from Category 1 at 64 kt to Category 5 at 137 kt and reads wind only, so it says nothing about surge or rain. Accumulated cyclone energy adds up the square of the wind through the storm's life, so it counts strength and duration together.

Sources

Storm history from NOAA NCEI’s International Best Track Archive for Climate Stewardship (IBTrACS), which merges the official best track of every warning agency. Live storms, cones, watches and warnings from the National Hurricane Center and the Central Pacific Hurricane Center. Archived radar from NOAA’s Level II archive.